QUESTIONS

(SBQ07HK.2)
A 66-year-old male is undergoing a total knee arthroplasty using a fixed bearing posterior stabilized component. During intraoperative trialing of the components it is noted that the flexion gap is loose, and extension gap is appropriate. If this is not corrected, what post-operative complication is this patient most at risk of having?
Review Topic

(OBQ06.165)
During trialing for a cruciate-sacrificing total knee arthroplasty, the surgeon notes an imbalance between the flexion and extension gaps with significant flexion instability. The extension gap is well balanced. Which of the following options is the best intra-operative solution?
Review Topic

(OBQ04.182)
During a primary total knee arthroplasty, trial of components demonstrates a knee that is balanced in flexion and loose in extension. Which of the following will balance the flexion and extension gap?
Review Topic

(OBQ10.248)
When performing a total knee arthroplasty using intramedullary referencing, the knee is stable at full extension, but it will not flex past 90 degrees. Which of the following adjustments can achieve satisfactory range of motion and stability in flexion and extension?
Review Topic

(OBQ06.171)
During trialing for a cruciate-retaining total knee arthroplasty, the surgeon is unable to fully extend the knee and is left with a 15 degree flexion contracture. The flexion gap is well balanced. Which of the following options will create a knee that is balanced in both flexion and extension?
Review Topic

(OBQ09.153)
While performing a revision total knee arthroplasty, the surgeon decides to upsize the femoral component with use of posterior femoral augments. Which of the following intraoperative exam findings would have led to this decision?
Review Topic

(OBQ09.57)
After insertion of the trial components in a total knee replacement, the surgeon finds that he is unable to fully extend the knee and that the tibial tray lifts-off when the knee is flexed past 90 degrees. What intervention should be taken to achieve a knee that is balanced in flexion and extension?
Review Topic

(OBQ08.208)
A patient comes to the office with a flexion contracture following a total knee arthroplasty that has resulted in an unsatisfactory outcome. Intraoperative examination also reveals the knee is loose in flexion. What steps should be included in the revision surgery?
Review Topic

(OBQ07.247)
While trialing components during a routine total knee arthroplasty, the flexion gap is felt to be loose and the extension gap is stable. Which of the following are possible ways to treat this intraoperative instability?
Review Topic

(OBQ05.223)
A 62-year-old woman is undergoing a revision total knee arthroplasty for aseptic component loosening. The surgeon has all the trial components in place and recognizes that the soft tissues are balanced in the coronal plane, but the knee is 10 degrees from reaching full extension. He proceeds to correct the contracture by making an additional 2mm cut off of the tibia and is successful in achieving full extension. What is the most likely effect of this additional resection?
Review Topic

(OBQ07.195)
A 62-year-old man undergoes total knee arthroplasty. Preoperative radiographs are shown in Figure A. Following bone resections and placement of trial implants, the knee is stable in flexion, but cannot achieve full extension. Which of the following interventions will most likely result in a knee that is balanced in flexion and extension?
Review Topic

(OBQ07.190)
During total knee replacement with the trial components in place, the knee achieves full extension but experiences tightness in flexion with a range to only 90 degrees. What is the most appropriate action?
Review Topic